Chronic giant papillary conjunctivitis, bilateral

This code signifies a persistent, inflammatory condition affecting both eyes, characterized by the presence of large papillae on the tarsal conjunctiva. It is often associated with chronic irritation, such as from contact lens wear or ocular prostheses, and can lead to symptoms like itching, foreign body sensation, and mucus discharge.

Apply this code when documentation explicitly states chronic giant papillary conjunctivitis affecting both eyes. This diagnosis is typically made based on slit-lamp examination revealing characteristic large papillae, often exceeding 0.3 mm in diameter, and a history consistent with chronic irritation.

• Ensure documentation specifies "chronic" and "giant papillary" to differentiate from other forms of conjunctivitis.
• Verify laterality; this code is specifically for bilateral involvement.
• Consider co-reporting codes for underlying causes, such as complications of contact lens wear (e.g., T85.398A).